Which correctly describes the function of the dna ligase enzyme?
a)copies a dna molecule
b) repairs breaks in the dna backbone
c) cuts dna to create sticky ends
d) produces a glowing green color question

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils